A year ago, Apple purchased AuthenTec, a fingerprint sensor maker. Is this the fruit of that acquisition? A folder full of code leaked from the beta 4 version of iOS 7 to 9to5Mac is the biggest clue yet to what riches the upcoming iPhone–though probably not this one–brings. Entitled BiometricKitUI, the folder suggests there will be a biometric fingerprint sensor on the iPhone’s home button. This is the text in full: